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Phase-Plane Stability Boundary Identification-Based Active Front Wheel Angle Control for a Steer-by-Wire Vehicle
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DOI：10.1002/rnc.70627.png)
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Abstract
En 中文
Steer-by-wire (SBW) technology enhances vehicle dynamics by eliminating mechanical constraints. However, ensuring lateral stability against road disturbances remains challenging. This paper proposes an intervention-based active steering control strategy. A sideslip angle–yaw rate phase plane identifies stability boundaries via a particle swarm optimization–backpropagation (PSO-BP) neural network, generating nonlinear intervention factors for active steering, integrated into a sliding mode controller. To ensure precise steering angle tracking, a Linear Active Disturbance Rejection Control (LADRC) method is developed. Hardware-in-the-loop simulations and real-vehicle tests verify that the strategy effectively mitigates instability under complex conditions. Compared with PID control, the LADRC-based tracking control improves step-response dynamics and disturbance rejection, demonstrating strong potential for practical vehicle applications.
Keywords:
active front-wheel steering
linear active disturbance rejection control
phase plane stability boundary identification
steering angle tracking
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